Namp’o climate

Name: Namp’o
Address: KP

Namp’o is warmest in August, with average highs of 28 °C, and coldest in January, when nights average -7.8 °C. July is the wettest month (250 mm) and January the driest (13 mm). Figures are 1991–2020 climate normals.

Across a full year Namp’o averages 954 mm of rain, 94 days above 25 °C and 120 days below freezing.

North Korea · population 455,000 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month August 28 °C
Coldest month January -7.8 °C
Driest month January 13 mm
Wettest month July 250 mm
Least cloud February 43 % cloud
Hottest on record July 35 °C
Coldest on record January -23 °C
Warmest sea August 23 °C

What to expectNamp’o through the year

Namp’o has a clear annual cycle: average daily highs run from -0.2 °C in January to 28 °C in August, a swing of 29 °C in mean temperature across the year.

Counted across a normal year, 94 days a year reach 25 °C, 14 of them reach 30 °C, 120 nights drop below freezing. The warmest reading in the 1991–2020 record is 35 °C, in July.

Rain is strongly seasonal. July averages 250 mm against 13 mm in January — 19 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Namp’o is warmest in August at 23 °C and coldest in February at 1.2 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	-0.2 °C	13 mm	47 %
February	2.8 °C	18 mm	43 %
March	8.6 °C	24 mm	44 %
April	15.9 °C	48 mm	48 %
May	21.6 °C	89 mm	53 %
June	26.0 °C	104 mm	62 %
July	28.0 °C	250 mm	72 %
August	28.2 °C	208 mm	65 %
September	24.3 °C	91 mm	56 %
October	17.9 °C	41 mm	46 %
November	9.6 °C	43 mm	50 %
December	2.2 °C	23 mm	50 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	-0.2 °C	-7.8 °C	-4.0 °C	9.3 °C	-23.0 °C	0	0	31
February	2.8 °C	-5.5 °C	-1.6 °C	15.0 °C	-21.4 °C	0	0	27
March	8.6 °C	-1.0 °C	3.5 °C	19.6 °C	-10.9 °C	0	0	20
April	15.9 °C	5.5 °C	10.4 °C	25.5 °C	-3.4 °C	0	0	2
May	21.6 °C	11.5 °C	16.3 °C	31.8 °C	3.8 °C	5	0	0
June	26.0 °C	17.1 °C	21.3 °C	33.7 °C	10.2 °C	20	2	0
July	28.0 °C	21.4 °C	24.4 °C	34.9 °C	15.5 °C	28	5	0
August	28.2 °C	21.6 °C	24.7 °C	34.7 °C	13.1 °C	29	6	0
September	24.3 °C	16.2 °C	20.0 °C	31.5 °C	7.8 °C	12	0	0
October	17.9 °C	9.0 °C	13.3 °C	27.8 °C	-1.9 °C	0	0	0
November	9.6 °C	1.6 °C	5.5 °C	20.3 °C	-9.7 °C	0	0	11
December	2.2 °C	-5.1 °C	-1.5 °C	14.3 °C	-16.3 °C	0	0	29

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	13 mm	3	9.8 h/day	47 %	64 %	18 km/h	3.4 °C
February	18 mm	4	11 h/day	43 %	63 %	19 km/h	1.2 °C
March	24 mm	4	12 h/day	44 %	66 %	20 km/h	2.5 °C
April	48 mm	6	13 h/day	48 %	66 %	20 km/h	6.6 °C
May	89 mm	8	14 h/day	53 %	69 %	18 km/h	11.1 °C
June	104 mm	9	15 h/day	62 %	75 %	16 km/h	16.2 °C
July	250 mm	15	15 h/day	72 %	83 %	16 km/h	20.5 °C
August	208 mm	14	14 h/day	65 %	83 %	15 km/h	22.5 °C
September	91 mm	6	12 h/day	56 %	77 %	14 km/h	22.3 °C
October	41 mm	6	11 h/day	46 %	71 %	16 km/h	19.2 °C
November	43 mm	7	10 h/day	50 %	71 %	18 km/h	14.2 °C
December	23 mm	5	9.5 h/day	50 %	67 %	18 km/h	8.4 °C

How Namp’o compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Namp’o	28 °C	-7.8 °C	954 mm	94
Sariwŏn-si · North Korea	28 °C	-8.3 °C	961 mm	99
Pyongyang · North Korea	28 °C	-9.9 °C	1,027 mm	96
Haeju · North Korea	27 °C	-6.5 °C	1,064 mm	68
Sunch’ŏn · North Korea	28 °C	-12 °C	1,230 mm	88
Paech’ŏn-ŭp · North Korea	28 °C	-7.5 °C	1,140 mm	90
Kaech’ŏn · North Korea	28 °C	-13 °C	1,290 mm	90

Planning a trip? See the best time to visit Namp’o.

QuestionsCommon questions about Namp’o’s climate

When is the best time to visit Namp’o?

That depends on what you want, so the honest answer is a comparison rather than a single month. May, June, September sit closest to 20 °C on average, August is the warmest month and January the driest. The month-by-month table above has the full picture.

How hot does Namp’o get?

In August, the warmest month, daily highs average 28 °C. About 14 days a year pass 30 °C. The highest value in the 1991–2020 record is 35 °C.

How cold does it get in winter?

Nights average -7.8 °C in January, the coldest month. A normal year has 120 nights below freezing.

Which month is wettest in Namp’o?

July, averaging 250 mm over 15 days with rain. The driest month is January with 13 mm. The year as a whole averages 954 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Namp’o rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.